Evaporator



FIG. 1 is a front view of the evaporator;

FIG. 2 is a rear view thereof;

FIG. 3 is a left view thereof;

FIG. 4 is a right view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The broken line showing is for illustrative purposes only and forms nopart of the claimed design.

We claim the ornamental design for an evaporator, as shown anddescribed.